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Add SDL_HINT_WINDOWS_ENABLE_MENU_MNEMONICS.

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Rudolf-Walter Kiss-Szakacs 2022-12-02 07:22:31 +02:00 committed by Sam Lantinga
parent c542aef600
commit 232ed540db
4 changed files with 37 additions and 12 deletions
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22
include/SDL_hints.h
View file

@ -1954,6 +1954,28 @@ extern "C" {
*/
#define SDL_HINT_WINDOWS_DISABLE_THREAD_NAMING "SDL_WINDOWS_DISABLE_THREAD_NAMING"
/**
* \brief Controls whether menus can be opened with their keyboard shortcut (Alt+mnemonic).
*
* If the mnemonics are enabled, then menus can be opened by pressing the Alt
* key and the corresponding mnemonic (for example, Alt+F opens the File menu).
* However, in case an invalid mnemonic is pressed, Windows makes an audible
* beep to convey that nothing happened. This is true even if the window has
* no menu at all!
*
* Because most SDL applications don't have menus, and some want to use the Alt
* key for other purposes, SDL disables mnemonics (and the beeping) by default.
*
* Note: This also affects keyboard events: with mnemonics enabled, when a
* menu is opened from the keyboard, you will not receive a KEYUP event for
* the mnemonic key, and *might* not receive one for Alt.
*
* This variable can be set to the following values:
* "0" - Alt+mnemonic does nothing, no beeping. (default)
* "1" - Alt+mnemonic opens menus, invalid mnemonics produce a beep.
*/
#define SDL_HINT_WINDOWS_ENABLE_MENU_MNEMONICS "SDL_WINDOWS_ENABLE_MENU_MNEMONICS"
/**
* \brief A variable controlling whether the windows message loop is processed by SDL
*

6
src/video/windows/SDL_windowsevents.c
View file

@ -1316,8 +1316,10 @@ WIN_WindowProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
case WM_SYSCOMMAND:
{
if ((wParam & 0xFFF0) == SC_KEYMENU) {
return 0;
if (!g_WindowsEnableMenuMnemonics) {
if ((wParam & 0xFFF0) == SC_KEYMENU) {
return 0;
}
}
#if defined(SC_SCREENSAVE) || defined(SC_MONITORPOWER)

20
src/video/windows/SDL_windowsvideo.c
View file

@ -29,6 +29,7 @@
#include "SDL_system.h"
#include "../SDL_sysvideo.h"
#include "../SDL_pixels_c.h"
#include "../../SDL_hints_c.h"
#include "SDL_windowsvideo.h"
#include "SDL_windowsframebuffer.h"
@ -43,24 +44,22 @@ static void WIN_VideoQuit(_THIS);
/* Hints */
SDL_bool g_WindowsEnableMessageLoop = SDL_TRUE;
SDL_bool g_WindowsEnableMenuMnemonics = SDL_FALSE;
SDL_bool g_WindowFrameUsableWhileCursorHidden = SDL_TRUE;
static void SDLCALL UpdateWindowsEnableMessageLoop(void *userdata, const char *name, const char *oldValue, const char *newValue)
{
if (newValue && *newValue == '0') {
g_WindowsEnableMessageLoop = SDL_FALSE;
} else {
g_WindowsEnableMessageLoop = SDL_TRUE;
}
g_WindowsEnableMessageLoop = SDL_GetStringBoolean(newValue, SDL_TRUE);
}
static void SDLCALL UpdateWindowsEnableMenuMnemonics(void *userdata, const char *name, const char *oldValue, const char *newValue)
{
g_WindowsEnableMenuMnemonics = SDL_GetStringBoolean(newValue, SDL_FALSE);
}
static void SDLCALL UpdateWindowFrameUsableWhileCursorHidden(void *userdata, const char *name, const char *oldValue, const char *newValue)
{
if (newValue && *newValue == '0') {
g_WindowFrameUsableWhileCursorHidden = SDL_FALSE;
} else {
g_WindowFrameUsableWhileCursorHidden = SDL_TRUE;
}
g_WindowFrameUsableWhileCursorHidden = SDL_GetStringBoolean(newValue, SDL_TRUE);
}
#if !defined(__XBOXONE__) && !defined(__XBOXSERIES__)
@ -448,6 +447,7 @@ int WIN_VideoInit(_THIS)
#endif
SDL_AddHintCallback(SDL_HINT_WINDOWS_ENABLE_MESSAGELOOP, UpdateWindowsEnableMessageLoop, NULL);
SDL_AddHintCallback(SDL_HINT_WINDOWS_ENABLE_MENU_MNEMONICS, UpdateWindowsEnableMenuMnemonics, NULL);
SDL_AddHintCallback(SDL_HINT_WINDOW_FRAME_USABLE_WHILE_CURSOR_HIDDEN, UpdateWindowFrameUsableWhileCursorHidden, NULL);
#if !defined(__XBOXONE__) && !defined(__XBOXSERIES__)

1
src/video/windows/SDL_windowsvideo.h
View file

@ -462,6 +462,7 @@ typedef struct SDL_VideoData
} SDL_VideoData;
extern SDL_bool g_WindowsEnableMessageLoop;
extern SDL_bool g_WindowsEnableMenuMnemonics;
extern SDL_bool g_WindowFrameUsableWhileCursorHidden;
typedef struct IDirect3D9 IDirect3D9;